Madhwatanr is a village in Jainagar tehsil in district of Kodarma, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Madhwatanr was 764 which includes 391 males and 373 females. Madhwatanr covers 72.82 ha area. Pincode of Madhwatanr is 825324.